'Necessary' in the Bible

But if you do what is wrong, you should be afraid, for it is not without reason that they bear the sword. Indeed, they are God's servants to administer punishment to anyone who does wrong. Therefore, it is necessary for you to be acquiescent to the authorities, not only for the sake of God's punishment, but also for the sake of your own conscience.

This is necessary because you know the times it's already time for you to wake up from sleep, because our salvation is nearer now than when we became believers.